From: T.Masuda on
I want to post USB request to our developing device. I found
IOCTL_USB_USER_REQUEST in a DDK include file. It seems to be a control code
for user mode applications which use system USB drivers. But Microsoft
doesn't document the usage.
Does anyone know how to use IOCTL_USB_USER_REQUEST and how to post USB
request using this control code?

Thanks in advance.